Im looking for some good ATC recordings from different Clearence Delivery freqs. around the world. It would have been perfect if the rec. was made at the airport with 100 % clean transmission - but other 'good' files are also welcome

After you've registered (free) and signed in, go the 'file search' page, and look for 'ATC', in FS98Sound or FS2000Sound, or just 'All' or something.

These files are meant to be used in FS add-ons such as GPWS 98 and BSATC. However, they are just *.wav files, so you can download them and listen to them using your favourite music player (winamp,...).